EP 0664663 A1 19950726 - Variable arc current electronic ballast for fluorescent lamps.
Title (en)
Variable arc current electronic ballast for fluorescent lamps.
Title (de)
Elektronisches Vorschaltgerät zum Verändern des Lampenstroms von Leuchtstofflampen.
Title (fr)
Ballast électronique avec courant d'arc variable pour des lampes fluorescentes.
Publication
Application
Priority
US 18336894 A 19940119
Abstract (en)
A fluorescent lighting control system providing automatic and/or manual adjustability of the arc current(s) in one or more fluorescent lamps to permit operation of the lamps at less than rated wattage, and its concomitant luminous flux, in interior building spaces where full light output of the installed lamp(s) is rarely required particularly when daylight components are present. The goal(s) of this invention is to provide means to reduce wasteful electrical consumption in buildings and thereby reduce operating costs and gain the attendant benefit of dampening the increasing need for more electrical generation with its concomitant environmental pollution problem. <IMAGE>
IPC 1-7
IPC 8 full level
H05B 41/392 (2006.01)
CPC (source: EP US)
H05B 41/3922 (2013.01 - EP US); Y10S 315/07 (2013.01 - EP)
Citation (search report)
- [Y] DE 3624106 A1 19880121 - ULLMANN ULO WERK [DE]
- [YA] WO 9301694 A1 19930121 - BOSCH GMBH ROBERT [DE]
- [XY] DE 4015455 A1 19911121 - ZUMTOBEL AG [AT]
- [YA] WO 9011005 A1 19900920 - HAREL JEAN CLAUDE [FR]
- [Y] EP 0445757 A2 19910911 - TDK CORP [JP]
- [A] US 5027034 A 19910625 - RUBY JOSEPH H [US], et al
- [A] DE 3623306 A1 19870205 - MATSUSHITA ELECTRIC WORKS LTD [JP]
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 0664663 A1 19950726; EP 0664663 B1 19991110; DE 69513206 D1 19991216; US 5483127 A 19960109
DOCDB simple family (application)
EP 95400077 A 19950116; DE 69513206 T 19950116; US 18336894 A 19940119